Embodiments of the present invention generally relate to a device that has an improved usable lifetime due to the presence of a lubricant that reduces the likelihood of stiction occurring between the various moving parts in an electromechanical device. The device includes a light source driving circuit, an MCU and a temporary power supplying circuit. A third receiving room is defined in the insulative housing and extends forwardly from the rear face as well. Thereafter the downloaded data portions are mutually transmitted among the user terminals within the download user network so that each of the user terminals can obtain all the data portions which constitute the data. The methods of the present invention incorporate the stereo-preferred oxidation of quinolone thiomethyl intermediates by optically active camphor based oxaziridines to provide R or S quinolone methylsulfinyl derivatives. The apparatus includes a first patterned roll, a second pattered roll, and a means for rotating the first and second patterned rolls such that their patterns are transferred to opposite sides of the opaque web while it is in continuous motion.